// Copyright 2025 Code Philosophy
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// SOFTWARE.

﻿using System;
using System.Collections.Generic;

namespace Obfuz.Utils
{
    public class CachedDictionary<K, V>
    {
        private readonly Func<K, V> _valueFactory;
        private readonly Dictionary<K, V> _cache;

        public CachedDictionary(Func<K, V> valueFactory)
        {
            _cache = new Dictionary<K, V>();
            _valueFactory = valueFactory;
        }

        public CachedDictionary(IEqualityComparer<K> equalityComparer, Func<K, V> valueFactory)
        {
            _cache = new Dictionary<K, V>(equalityComparer);
            _valueFactory = valueFactory;
        }

        public V GetValue(K key)
        {
            if (!_cache.TryGetValue(key, out var value))
            {
                value = _valueFactory(key);
                _cache[key] = value;
            }
            return value;
        }
    }
}
